tripp



sept. 12, 1939. E D TRW 2,172,553

NAIL

Filed June 1.3, 1958 fm2/s722507 7575975 22. MU/2,' @1% CL.

Patented Sept. 12, 1939 .Elbert n. Tripp, chicago, 11i., @signor to Albert J. Deniston, Jr., Chicago, Ill.

' Application June 13, 1938, Serial No. 213,369

11 Claims.

,This invention relates to a nail and to the method of making it. It has for one object to provide a nail which is provided along one portion of its shank with ring-like projections of a type suitable for engagement with wood and so arranged as to damage the wood bre a minimum during driving, and also provided else-` where on its shank with a different sort of ringl like projection arranged to key with or to engage sheathing material through Which the nail may p ass.

Another object is to provide a nail of the type indicated in which on that portion of the nail which is to enter wood, projections of a sort to damage the wood as little as possible are provided and in which upon that portion of the nail which does not vpass through the wood, projections of a type which would damage the wood breare positioned.

Another object of the invention is to provide upon a nail which is adapted for driving into wood and intended to engage sheathing, relatively smaller projections on that end of the nail which enters the wood and relatively larger projections on that portion of the nail which does not enter the wood.

A still further object is to provide a method for producing the projections or rings upon the nail.

Other objects will appear from time to time in the specification and claims.

The invention is illustrated more or less diagrammatically in the accompanying drawing,

wherein:

Figure 1 is a side elevation of the nail `before the formation of the projections;

Figure 2 is a. side elevation after the formation of the projections and with a sealing head in position, said head being shown in section;

Figure 3 is a longitudinal section through the nail in position after being driven into a piece of Wood and after passing through a sheathing which it is holding in place;

Figure 4 is a section through the dies which form the projections or rings on the nail illus# trating the formation of the rings or projections, lthe nail being shown in elevation.

Like parts are indicated by like characters throughout the specification and drawing.

Numeral I is the shank of a nail. 2 is an integral head. 3 is a curved iillet which may or may not be positioned between the nail shank and the nail head at the point of juncture of e the two. l is an enlargement formed on` the nail shank at a point below or separated from the head.

While the nail may be used with or without a Y sealing head, it is frequently desirable to provide such a head and when that is done, a head which may beof lead or other material relatively softer than the material of the nail is provided.

(C1. iss-2s) This head, as indicated, comprises a main portion 5 which underlies the nail head 2 and is provided with a downwardly depending peripheral skirt 6. The sealing head lies about and contacts the portion I of the shank I of the nail, which portion lies between the nail head 2 and the enlargement 4. A -sleeve orllet 8 is formed integrally with the sealing head and embraces the shank portion 1, and at its lower end contacts the enlargement 4 or the projections or rings formed thereon and is thus held in place so that displacement of the sealing head along the nail shank. is prevented by the contact of the portion 8 with the enlargement 4 or with the projections or rings which are formed upon it.

After the nail has beeninitially formed, for example as shown in Figure 1, it is acted upon by suitable dies to produce the ring-like pro-` jections which are shown in Figures 2, 3 andA 4. As there shown, there is a plurality of projec- -tions 9 which at their outermostportions Il] are relatively rounded. Interspaced between each of such rings 9 is a sharper ring II which projects farther outwardly than does the point Ill and which is vgenerally sharper than the point I0. The members Il are inclined on their downward or driving edges as at I'2 so that when driven into the woodor any other material which is to receive the nail, they present to the material into which they are driven the inclined face I2 and tend to damage the bres of the material a minimum. The rounded portions IU have a similar eifect and in general are similarly disposed, It is to be understood that the diagrammatical showing herewith may be varied without departinglfrom the spirit of the invention. Thus in particular the rounded members I0 might be sharper than as shown.

I The projecting or ring-like members which are formed on`the enlargement 4 are ofA a different contour from those formed' on the shank I.

Thus they aregenerally angular and present a.

downwardly inclined face. -Two such enlargements are shown at I3`-I3 and a slightly smaller one is shown at I4. As there shown, they are larger than the projecting members I0, II and v I2 and their shape is such that ,if projections of this shape or size were driven into wood or similar material, they would damage' the fibres and would thus make the hold of the fibres upon the nail less satisfactory. But since these larger ring or projecting members I3, i4 are formed on that portion of the nail which is not to be driven into the holding material, their shape or size cannot damage that material and because of their shape and size, they engage the sheathing material I5 better than the smaller and differently shaped rings I0, II and I2 could do.

As shown in the completed arrangement of or other supporting member I6, and the shank is engaged in the wood by the projections I0, II and I2. The sheathing or other covering member I5 has been perforated either by the point of the nail or otherwise and the nail has passed through it to engage the member I6. When the nail is driven or forced home to its nal position, the sealing head is to some degree compressed between the driving head 2 and the material I5 and thus seals the perforation in the material I5. The edges I1 of the sheathing material engage upon or interlock with one or another of the projecting ring-like members I3, I4. As shown in Figure 3, they are interlocked with the uppermost member', namely I4. They might, however, have interlocked with one of the members I3. The shape of the nail thus provides retaining projections which engage the wood or other material, and provides retaining members of a different size, shape or contour, which engage and interlock with the sheathing material which is secured to the wood, and the shape of the projections of each class is that most suitable for the purpose which it is to carry out.

In Figure 4 one form of die assembly for producing the nail is shown. As there shown, the dies are substantiallyidentical with each other. The lowermost dies consist of the main portion I8 whose upper surface is grooved as at I9. The grooves have substantially vertical portions and are joined by substantially inclined portions.

Azlsimilar upper die member 20 is grooved as at As shown the dies are relatively offset withrespect to each other laterally. This may be readily seen by comparing the position of one of the vertical faces X of a groove I9 of the lowermost member I8 with the corresponding vertical face Y of a groove 2| of the uppermost member 20. It will be seen that one is offset with respect to the other. The degree of this offset may be varied and thus the contour and shape of the projections I0, II and I2 formed on the shank of the nail, may be varied.

It will be noticed that the size and shape of thegrooves and the cross ribs are analogous, members -in both dies are the same from side to side and thus when a nail is passed between the dies and caused to move along between them, the nail is subjected to the action of identical die parts through that portion of its length which is engaged by the dies. Because of the greater amount of material provided by the enlargement 4 on the shank I, the projections or ring like members which are formed by the dies from the enlargement 4 are of different size and shape than those formed elsewhere, although the grooves or projections of the dies which act upon the nail enlargement 4 are identical in size and shape with those which act upon the shank of the nail and thus by passing a nail of varying thickness through unvarying dies, projections or grooves or ring-like members are formed on the nail which are not merely of dierent size with respect to each other but are of different shape and contour and thus by a single set of dies of a single shape, the nail is provided with rings or projections of totally different contour, each suitable for the particular purpose for which it is intended.

Figure 3, the nail has been driven into a wooden after it is passed between two such dies as those shown in Figure 4. They may lie horizontal and one die preferably moves with respect to the other along a parallel path. As the nail is moved between the dies it is caused to assume the shape shown in Figure 4 and thus is shaped on its shank with projecting ring-like members of one shape and size and is simultaneously provided on its enlargement with ring-like projections of another shape and size. After the nail has passed through the dies, it may have applied to it a sealing head such, for example, as that shown in Figures 2 and 3, or it may, if desirable, be used without such sealing head and ofv course it may be galvanized or given any desired protective coating or treatment.

When the nail is completed in the form shown in Figure 2, for example, it may be used. One common use is to secure to the roofs and walls of buildings corrugated metallic sheathing of the sort indicated in Figure 3. When this is done nails are generally driven through the raised corrugations and may be used to form their own perforations or may be driven through perfora-' tions otherwise formed. As the nail is driven inwardly, the edges of the material of the sheathing about the perforations are bent 'inwardly as shown in Figure 3. The smaller ring-like projections pass into the wood or similar material and because of their shape and contour, cause a minimum of damage and displacement of the fibres and hence reduce the holding power as little as possible. 'I'he sheathing material being preferably somewhat springy, permits passage of the enlarged rings I3, I4. It springs into place about them after they have passed, thus keying with one or another of them, and when that is done, the roofing or sheathing is keyed to the nails so that the nails cannot pull away from it and by reason of the shape of the projecting members on the shank, that also is keyed to the supporting member I6. The various parts of the sealing head, being of softer material than the nail itself, are somewhat distorted or compressed so thatthey seal the hole formed in the member I5.

I claim:

l. A nail having a shank and an integral head, the shank being provided throughout the maior portion of its length with a plurality of projections and depressions, the projections being formed with inclined surfaces sloping away from the point of the nail to facilitate driving, the shank being further provided above the first mentioned projections with additional projections having the same direction of slope but extending 2. A nail having a shank and an integral-head,

the shank having an enlargement and being pro- Avided throughout aportion of its length, and not on the enlargement, with a plurality of annular projections and depressions, the projections being formed with inclined surfaces sloping away from the point of the nail to facilitate driving,l the shank being further provided on the said enlargement and above the first mentioned annular projections with additional projections having the same direction of slope but extending laterally a sealing member of material softer than the nail positioned about and beneath the head.

3. A nail having a shank and an integral head,

the shank having an enlargement and being provided throughout the major portion of its length, but not on the enlargement, with a plurality of annular projections anddepressions, the'projections being formed with inclined surfaces sloping away vfrom the point of the -nail to facilitate driving, the shank being further provided on the said enlargement andabove the first mentioned annular projections with additional annular pro jections having the same direction of sloper but extending-laterally farther than the first mentioned projections, and a sealing member ofmaterial softer than the nail positioned about and beneath the head. P x

4. A nail having a` shank and an integral head, the shank being providedthroughoutthe major portion of its length with a plurality of annular projections and depressions of different lateral extent, the projections being formed` with inclined surfaces sloping away from the point of the nail to facilitate driving, the shank being further provided above the first mentioned projections with additional annular projections having the samerdirectionof slope but extending laterally farther than the first mentioned pro jections, and being further provided above s aid last mentioned projection with another projection of lateral extent greater than those rst mentioned and less than those last mentioned,

' anda sealing member of material softer than the nailpositioned abqut and beneath the head, provided with a central depending tubular portion at its lower edge bearing against the upperv surface of one of said annular projections, whereby the sealingfhead fromithe nail is prevented. f f 5. A nail having a shank and an integral head, the shank having an enlargement and being provided throughout the major portion of its length with a plurality of projections and depressions,

"the projections being formed with inclined surfaces sloping away from the point of the nail to facilitate driving, the shank being further prolaterally forthertnan the erst mentioned provided above the rst mentionedprojections -with additional projections having the same direction of 'slope but-different shape and extending jections, and a sealing member of material softer than the nail positioned about and beneath 'skirtl and 4with' the! head, provided with a lperipheral depending a central depending tubular portion. ,V

6. A nail having a shank and an integral head.

l thelshank being provided throughout the major portion of its length with a plurality of annular projections and depressions, the projections being formed with inclined surfaces sloping away from the point ofthe nail to facilitate driving, -the- 'shank being further provided above the first mentioned projections with additional, annular projections 'havingthe same direction of slope but a -diiferent shape and Aextending laterally farther than the rst mentioned projections, and a sealing member of material softer than .thenail positioned about and beneath the head, provided with a peripheral depending skirt andwith a central depending tubular portion embracing the nail' shank and"at its lower edge bearing against the upper surface'offone of said annular projections.'

about said shank between said head and said` enlargement, said enlargement provided with outwardly extending projections, said tubular sleeve terminating at one of said projections and being held in place thereby, said fastener being additionally provided` at a proint more distant from its head with outward projectionswhich project outwardly a distance less than said first mentioned projections. A

8. In ra fastener seal, a nail having a shank and a head and a bulbous enlargement formed on said shank and spaced away from said head, a t sealing head of relatively soft material in contact with the under surface of said head and having a peripheral skirt portion and a generally tubular sleeve about said shank between said head and said enlargement, said enl gement provided with outwardly`extending projections, said tubular sleeve terminating at approximately the-upper margin of the uppermost of said rejections and being held in place thereby, sai fastener being additionally provided at a .point more distant fromits head-withoutward projections which project outwardly a distance less than said rst mentioned projections.

9. In a fastener seal, a nail having a shank and a head and a bulbous enlargement formed on said shank and spaced away from said head, a sealing head of relatively-soft material in contact with the under surfabe of said headand having a peripheral skirt portion and a 'generally tubular sleeve about said shank between-.said head and said enlargement, said enlargement provided with outwardly extending annular projections, said tubular sleeve terminating at approximately'the upper margin of the uppermost of said projections and being held in piace thereby; said fastener being additionally provided at a point more ldistant from its head with outward annular projecttions which project outwardly a distance less than said first mentioned projections.

10. In combination in a nail, a shank and an integral head; a bulbous enlargement' formedl on said shank, and spaced away from said head, said enlargement provided with\outwardly extending annular projections, said nail additionally p'rcvided at points more distant from its head lthan55 -said bulbous enlargement with outward projections which project outwardly from the shank a ythan said rst mentioned projec;

nrovided at `points more distant from its head jthn d bulbous enlargement with outward projections which project outwardly from the .shank a distance less than said rst mentioned .prcjections, said outward projections formed'witn m- -clinedl surfacessloping away from the point of tnonmtofonutetedrivm'.

i TD. 

